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碎石土加筋前后应力一应变关系的归一性较差。围压越低，颗粒越硬，归一性越差；随围压增大，归一性增强。根据加筋前后各试验点的集中程度和围压大小，将碎石上的归一化直线划分为两条，并由归一化参数预测碎石土加筋前后的应力－应变关系。与实测曲线比较，不加筋时差别随围压增大和颗粒粗硬而增大；加筋时差别较小。同时根据归一性提出了描述该类土体切线剪切模量的归一化本构方程，其方程参数直接由三轴试验成果确定，并给出了所有方程参数。
Before and after the gravel soil reinforcement stress-strain relationship between the less normal. The lower the confining pressure is, the harder the particles are and the poorer the normality is. With the increase of confining pressure, the normalization is enhanced. According to the concentration of each test point and the confining pressure before and after the reinforcement, the normalized straight line on the gravel is divided into two. The normalized parameters are used to predict the stress-strain relationship before and after gravel reinforcement. Compared with the measured curve, the difference does not increase with the confining pressure increases and coarse particles and increased; when the difference is small. At the same time, according to the normality, a normalized constitutive equation describing the tangent shear modulus of the soil is proposed. The equation parameters are directly determined by the triaxial test results and all the equation parameters are given.